Speed-indicator



No. 622,605. Patented Apr. 4, I899. L. COMPTON. SPEED INDICATOR.

(Application filed Jan. 27, 1898.)

(No Model.)

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No. 622,605. Patented Apr. 4, I899.

L. COMPTON.

SPEED INDICATOR.

(Application filed Jan. 27, 1698.

(No Model.) 2 sneets -sheet 2.

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, NlTED STATES PATENT LINN COMPTON, or STAPLES, MINNESOTA.

SPEED-INDICATOR.

SPECIFICATION forming part of Letters Patent No. 622,605, dated April 4,1899.

Application filed January 27, 1898. Serial No. 668,195. on model.)

.To all whom it may concern:

Be itknown that I, LINN COMPTON, residing at Staples, in the county ofTodd and State of Minnesota, have invented certain new and usefulImprovements in Speed Indicators; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

This invention relates to speed-indicators; and the object in view is toprovide a simple device of the character referred to which may beapplied to threshing-machines and machines of various classes for thepurpose of accurately indicating the speed at which the operative partsof the machine are driven, so as to enable the feeder or operator toaccurately gage the time at which to deliver the bundles or othermaterial to the machine.

The detailed objects and advantages of the invention will appear in thecourse of the subjoined description.

The invention consists in an improved speed-indicator embodying certainnovel fea-' tnres and details of .construction and arrangement of parts,as hereinafter fully described, illustrated in the drawings, andincorporated in the claims.

In the accompanying drawings, Figure 1 is a front elevation of theindicator. Fig. 2 is an interior perspective View with a portion of thecasing broken away, showing the operative parts in their properrelation. Fig. 3 is a detail horizontal section taken in line with theslide-bar. Fig. 4 is a detail perspective View of the indicator-arm.Fig. 5 is a similar view of the slide-bar and fork.

'Similar numerals of reference designate corresponding parts in all theviews.

The speed-indicator contemplated in this invention embodies,essentially, a suitable casing 1 in the form of a box of suitable size,adapted to be applied at a convenient point on the machine andpreferably of rectangular shape. Journaled in the opposite sides or endsof the casing 1 is a rotary shaft 2, upon the outer end of which ismounted a pulley 3, adapted to receive a driving-belt from anyconvenient shaft of the machine. Upon the shaft 2 is mounted aball-governor embodying a stationary collar 4, having laterally-projecting Wings, to which are pivoted a pair of weighted arins 5, adapted to.be thrown out by centrifugal action. Mounted slidingly upon the shaft 2is a runner 6, having pivotally connected thereto links 7,. which connect pivotally at their opposite ends to the weighted arms 5 atintermediate points, as

shown at 8, so that as the arms are thrown outward the runner is movedlongitudinally of the shaft. Interposed between the runner 6 and collar4 is a spiral spring 9, the tension of which must be overcome as theweighted arms are thrown out. The runner 6 is provided with arigidlyattached or integrally formed collar 10, provided with one ormore annular grooves 11 to receive the fork 12 of a slide-bar 13,mounted at or near its opposite ends in brackets or guides 14, securedto the inner wall of the casing. The slide-bar 13 carries alaterally-projecting and headed stud 15, which is received in a slot orgroove 16, extending longitudinally of an indicatorarm 17, pivotallymounted at one end, as at 18, and adapted to swing at its free end infront of a dial 20 in the upper portion of the casing 1, the said dialbeing graduated and having numerals represented thereon, so as toindicate, in connection with the arm'li, the exact speed at which themachine is driven.

From the foregoing description it will be seen that as the shaft 2 isrevolved the arms 5 are thrown outward by centrifugal action and thespring 9 compressed as the runner 6 is moved toward the collar 1. Inthis niovement of the runner the fork 12 is correspondingl'y moved,thereby sliding the bar 13 in its brackets. The stud 15 effects avibration of the indicator-arm 17 and causes the latter to move acrossthe indicating-dial. It will thus be seen that the operator may at alltimes observe the speed at which the machine is driven and maycorrespondingly regulate the rapidity at which the bundles or other material are fed to the machine.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is- V 1. In a speed-indicator, the combinationwith a rotating shaft, of a collar fast thereon, weighted arms pivotallyconnected to said collar, a sliding runner on said shaft having a linkedconnection with the weighted arms and provided with a grooved collar, aspiral spring extending around said shaft and interposed between thestationary collar and movable runner, a slide-bar having arigidly-attached and laterally-projecting fork engaging the groovedcollar, a dial, and a pivoted indicator-arm moving across said dial andhaving a pin-and-slot connection with said slide-bar, substantially asdescribed.

2. In a speed-indicator, in combination, a casing, a rotating shaftjournaled therein, a stationary collar, a runner slidingly mounted onsaid shaft and having a grooved collar, links connecting said runner andweighted arms, a spiral spring surrounding said shaft between thestationary collar and runner, a

slide-bar mounted within the casing and having a rigidly-attached forkwhich engages the

